291 



1784. Chaîna Gigas Linnaei etc., Chemnitz, Conch.-Cab., VII, p. 11, pi. XLIX, figs. 492, 493. 



1795. Chaîna imbricata sen Gigaiitea etc., Chemnitz, Conch.-Cab., XI, p. 239, pi. CCIV, 



figs. 1997, 1998. 

 1797. Bruguière, Encyclopéd. Méthod., pi. CCXXXVI, figs. \a, b. 



1817. Chaîna Gigas var. A. DiUwyn, Descr. Cat., I, p. 213. 



18 19. Tridacna squamosa Lamarck, Anim. sans Vertèb., VI, p. 106. 



1825. Tridacna squamosa Dubois, Epitome, p. 100. 



183 1. Tridacna squamosa Deshayes, Encyclopéd. Méthod., II, p. 1046, 



1834. Tridacna squamosa Quoy & Gaimard, Voy. "Astrolabe" III, p. 487, pi. LXXIX, fig. i. 



1836. Tridacna squamosa Deshayes in Lamarck, Anim. sans Vertèb., VII, p. 10. 



1843. Tridacna Squamosa Hanley, Rec. Biv. Shells, p. 232. 



1845. Tridacna squamosa Chenu, lUustr. Conchyliol.. p. i, pi. III. 



1849. Tridacna squamosa Cuvier, Règne Anim., MolL, pi. XCVI, fig. i. 



1857. Chametrachaea sqamosa Adams, H. & A., Gen. Rec. MoU.. II, p. 465. 



1860. Tridacna squamosa Reeve, Elem. Conch., II, p. 75. 



1862. Tridacna squamosa Reeve, Conch. Icon., XIV, Tridacna pis, III, IV, figs. 3, ib, c, d. 



1868. Tridacna squamosa Kùster in Martini-Chemn. Conch.-Cab. (N. F.), VIII (4), Tridacna 



etc., p. 5, pi. I, figs. 1 — 3, pi. II, figs. I, 2. 



1869. Tridacna squamosa Lischke, Japan. Meeresconch., I, p. 160. 

 1882. Tridacna squamosa Dunker, Ind. Mar. Moll. Japon., p. 215. 

 1884. Tridacna squamosa Grasset, Ind. Test. Viv., p. 278. 



1887. Tridacna squamosa Sowerby, Thés. Conch., V, p. 180, pi. CCCCLXXXV — CCCCLXXXIX, 



figs 2, 7, 15, 17. 



1889. Tridacna squamosa Morlet, Journ. Conchyliol., XXXVII, p. 168. 



1891. Tridacna sqzLamosa Fischer, P., Bull. Soc. Hist. Nat. d'Autun, IV, p. 228. 



1899. Tridacna gigas var. squamosa Fledley, Mem. Austral. Mus., III, p. 504. 



1899. Tridacna squamosa Melvill & Standen, Journ. Linn. Soc. London (Zool.), XXVII, p. 190. 



1903. Tridacna squamosa Hidalgo, Obras Malacol., II, p. 386. 



1906. Tridacna squamosa Standen & Leicester, Ceylon Pearl Oyster Rapt., V, p. 291. 



1909. Tridacna squamosa Lynge, D. Kgl. Dansk. Vidensk. Selsk. Skr. Nat.- Math., (7), V, 



p. 262. 



191 1. Tridacna squamosa Pelseneer, "Siboga" Lamellibranches (Anat.), p. 58. 



1914. Tridacna squamosa Hirase, Illustr. Thousand Shells, pt. i, fig. 36. 



191 7. Tridacna squamosa Odhner, Kungl. Sv. Akad. Handl., LU, N° 16, p. 8. 



192 1. Tridacna squamosa Hedley, Mem. Austral. Mus., XIII, p. 172, pi. XXVIII, fig. 3. 



1928. Tridacna squamosa Faustino, Summary Philippine Mar, Freshw, Moll., p. 65. 



Hedley originally considered T. squamosa to be a variety of T. gigas^ and Cooke and 

 Smith were of the same opinion. Recently Dautzenberg ^) has included it in the synonymy of 

 T. gigas, but I agrée with Hedley's later conclusion that it is a distinct species. As noted by 

 Hedley, T. sqtiamosa has a more equilateral shell than the other of the genus, and the comb 

 of the pedal orifice also has stronger teeth. 



Distribution : — T. squamosa has a wide distribution in the Indo-Pacific, and probably 

 also in the Red Sea. As suggested by Hedley the range of T. sqitamosa appears to be "almost 

 coextensive with that of the reef-building corals". 



The "Siboga" expédition collected mostly young shells of this species at Haingsisi, Samau 

 Island, Timor (St. 60), reef near Anchorage of Beo, Karakelang Islands (St. 131), reef at 

 Elat, West coast of Great Kei Island (St. 261) and reef in Pepela Bay, East coast of Rotti 

 Island (St. 301). 



i) Dautzenberg, P. — Faun. Colon. Français., III, p. 587 (1929). 



